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tigry1 [53]
3 years ago
10

What is 2x cubed plus 2x squared simplified too

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
5 0

Answer:That can’t be simplified further.

Step-by-step explanation:

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A car dealership sells 0, 1, or 2 luxury cars on any day. When selling a car, the dealer also tries to persuade the customer to
melisa1 [442]

Answer:

Mean = 1.42

Variance = 0.58

Step-by-step explanation:

Given: X denote the number of luxury cars sold in a given day, and Y denote the number of extended warranties sold.

Also, joint probability function of X and Y are given.

To find:

mean and variance of X

Solution:

From the given joint probability function of X and Y,

P(X=0)=\frac{1}{6}\\P(X=1)=\frac{1}{12}+\frac{1}{6}=\frac{1+2}{12}=\frac{3}{12}\\P(X=2)=\frac{1}{12}+\frac{1}{3}+\frac{1}{6}=\frac{1+4+2}{12}=\frac{7}{12}

Mean of X:

E(X)=\sum XP(X)\\=0\left ( \frac{1}{6} \right )+1\left ( \frac{3}{12} \right )+2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{14}{12}\\=\frac{17}{12}=1.42

Variance of X:

E(X^2)=\sum X^2P(X)\\=0^2\left ( \frac{1}{6} \right )+1^2\left ( \frac{3}{12} \right )+2^2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{28}{12}\\=\frac{31}{12}

var(X)=E\left [ X^2 \right ]-\left ( E\left [ X \right ] \right )^2\\=\frac{31}{12}-\left ( \frac{17}{12} \right )^2\\=\frac{31}{12}-\frac{289}{144}\\=\frac{372-289}{144}\\=\frac{83}{144}\\=0.58

5 0
4 years ago
Given measure of arcs, solve for the unknown angles
IRINA_888 [86]
68 is the answer of the question you ask the committee
3 0
3 years ago
Factor the expression completely -15t-6
serg [7]

Answer:

\large\boxed{-15t-6=-3(5t+2)}

Step-by-step explanation:

-15t-6=(-3)(5t)+(-3)(2)=-3(5t+2)

6 0
3 years ago
Plz help meeeeeeeee You must make a constructive response and this is 8th Grade Math
Natali [406]

Answer:

I'm in 10th grade so I'll see what I can do and will answer to the best of my ability.

Step-by-step explanation:

What Julie did wrong was, she did simplify she just did it wrong. She used 4*8 which does equal 32 but 8 can't be simplified anymore than that. If she would of used 2*16 then her answer would be right.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Convert 12.045 to base 10​
jeyben [28]

Answer:

12.045 is already in base 10, since it can'be binary or hexadecimal,

it's a denary(decimal) number, and decimal numbers are base 10

5 0
3 years ago
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